Spring for vehicles.



MI-mnATmN FILED QUT,3,1906,

"eran erase ramena? erre LEVERETT C. HAYNES, 0F BSTON, IXASSACUSETTS.

no. ascesa.

Speeiication Letters Patent.

atented March 3, 1908 Apparition ne@ october 3,1905. sessies' 337.303.

same has proved to be more than the normalT amount that the primary spring should bear; the mechanism also provides yielding .check devices for preventing the spring from rebounding to a dangerous degree.

The-mechanical construction and its func-- tions are illustrated in the accompanying drawings, in which- Figure l is lan elevation of my springs showing the connecting parts; Fig. 2 is a ver-- tical section taken on line 2 2 of Fig. 1;

F ig. 3 is a vertical section enlarged showing a part of one of the auxiliary mechanisms.

In the drawings A and A1 represent that part of the vehicle to which my improvements are to be applied.; B and B1 represent the leaves of an elliptical spring which is at- .tached'to the body of the vehicle and to the axle by any of the well-known devices; a loar or arm D is also rigidly connected Vto the axle; to this bar one 'or more springs K are firmly attached by their upper ends, as shoY *n in Fig. 3. are connected to the parts l). The connections between the ends of the springs K, K, may be eected by screwthreads with. which the coils of the spring engage as shown, or bv brazing or otherwise. l the block E, by brazing or otherwise, extends upward to the stop-bar or arm to which it is rigidly connected.

The function of the alwve-dcscribed parts isto assist the elliptical spring B B1 when overloaded; thus `when the load is so great that the bolster A, or part of the body of the vehicle, is depress l by s'ufhciently to bring the said bolster .o contact with the stop-bar G1 or the ends of the bolt it, then the further depression will be resisted 'by the springs K, K, for the reason that the pressure exerted on the stop-b ar G1 by the load will be transmitted to the blocks E, E, by the rods The lower ends of these springs A. red R attached tb' it, thence the pressure will be converted longitudinal strain on the springs lil; that is, the saidsprings will assist the elliptical springs by their resistance to extension.

F is a cross-connecting bar required when two springs are used as shown in the drawings, Fig. l. The bloclrs J and H are made of some yielding material like leather or rubber and serve as 'checks for the enlarged part R of the rod R and the screw nut 'R3 (see Fig.

3), and also 'prevent a tendency of the screwv nut to loosen.

To prevent a dangerous reaction of the springs'which might cause breakage of some of the parts,and particularly the elliptical springs, l have the following mechanism: Springs G (of the extension order) are rigidlv fastenedat their lower ends to the enlarged parts Rl of the rods R, and their upper ends are made fast to the stop-bar Gl, and the said stop-bar is connected by the toggle-device G2 and pivots G3, Gt, or chains if desirable, to the body of the vehicle, so that any strain caused by the rebound of the load will be transferred to the springs G, which will check the said rebound and prevent it from doing injury to the elliptical springs or other parts. it is obvious that by slight mechanical changes single sets of springs G and K may be used.

Claims y 1 Springs for vehicles, comprising an ellip- 1tical spring attached to the body of the vehicle and to the axle; an axle-bar attached to 'the axle; extension springs attached to said axle-bar and extending downward to, and attacl'iedat their lower ends to the lower ends of rods, and said rods which extend up ward through the said extension springs and' through the said axle-bar to the stop-bar G1; and the said stop-bar; toggles constructed to connect said stop-bar to the body of thevehicle closed s prings attached to the said stop bar and extending downward through the said axle bar and the said extension springs and rigidly attached to the l.lower ends of the rsaid roes and said extension springs substantially as and for the purpose set forth.

.ln testimony whereof, l have signed my name to 'this specification in the presence of two subscribing witnesses, onthis first day of @ctober A. l). 1906.

il. HYNES.

c. linen,

. Pannen. 

